Usb device

Abstract

A USB device having a circuit board, a control board, an inner housing, a outer housing and a front cover and a rear cover is provided. The circuit board has a first connector and a second connector disposed opposite to the first connector. The control board is disposed on the circuit board. The inner housing is used for receiving the circuit board and the control board. The outer housing has a front side and a rear side, and the outer housing is used for covering the inner housing. The front cover and the rear cover are disposed on the front side of the outer housing and the rear side of the outer housing respectively. By combining the control board and the inner housing, the circuit board is slidably disposed within the inner housing.

What is claimed is: 
     
         1 . A USB device, comprising:
 a circuit board, having a first connector and a second connector disposed opposite to the first connector;   a control board, being disposed on the circuit board;   an inner housing, being used for receiving the circuit board and the control board;   a outer housing, having a front side and a rear side, and the outer housing is used for covering the inner housing; and   a front cover and a rear cover, being disposed on the front side of the outer housing and the rear side of the outer housing respectively;   wherein by combining the control board and the inner housing, the circuit board is slidably disposed within the inner housing.   
     
     
         2 . The USB device as claimed in  claim 1 , wherein both the left side and the right side of the control board have an engaging block and a sliding block, both the left side and the right side of the inner housing have a plurality of engaging grooves and a sliding groove, the engaging block is corresponded to the engaging grooves, and the sliding block is corresponded to the sliding groove. 
     
     
         3 . The USB device as claimed in  claim 2 , wherein the engaging grooves are a central engaging groove, a front side engaging groove and a rear side engaging groove, which make the control board controlling the circuit board to be disposed at a central position, a front side position and a rear side position accordingly. 
     
     
         4 . The USB device as claimed in  claim 3 , wherein when the circuit board is disposed at the central position, the first connector and the second connector are in a storage state, and the engaging block is adapted to be fixed with the central engaging groove. 
     
     
         5 . The USB device as claimed in  claim 3 , wherein when the circuit board is disposed at the front side position, the first connector is in an exposed state, and the engaging block is adapted to be fixed with the front side engaging groove. 
     
     
         6 . The USB device as claimed in  claim 3 , wherein when the circuit board is disposed at the rear side position, the second connector is in an exposed state, and the engaging block is adapted to be fixed with the rear side engaging groove. 
     
     
         7 . The USB device as claimed in  claim 3 , wherein a adjust button is disposed on the control board, and the adjust button is exposed to the outer housing via an opening. 
     
     
         8 . The USB device as claimed in  claim 7 , wherein the adjust bottom is adjustable to move the engaging block to the central engaging groove, the front side engaging groove and the rear side engaging groove by pressing the adjust bottom. 
     
     
         9 . The USB device as claimed in  claim 1 , wherein the first connector and the second connector are any two of USB connector, Mini-USB connector, Micro-USB connector and Lightning connector.